21522401130143 has 4 divisors (see below), whose sum is σ = 21533167716000. Its totient is φ = 21511634544288.

The previous prime is 21522401130137. The next prime is 21522401130149. The reversal of 21522401130143 is 34103110422512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21522401130137) and next prime (21522401130149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21522401130143 is a prime.

It is a super-3 number, since 3×21522401130143³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21522401130149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5383289930 + ... + 5383293927.

It is an arithmetic number, because the mean of its divisors is an integer number (5383291929000).

Almost surely, 2^{21522401130143} is an apocalyptic number.

21522401130143 is a deficient number, since it is larger than the sum of its proper divisors (10766585857).

21522401130143 is a wasteful number, since it uses less digits than its factorization.

21522401130143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766585856.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 21522401130143 its reverse (34103110422512), we get a palindrome (55625511552655).

The spelling of 21522401130143 in words is "twenty-one trillion, five hundred twenty-two billion, four hundred one million, one hundred thirty thousand, one hundred forty-three".